New Inventory Daily | Same Day Free Shipping

12,984 ratings on eBay See our eBay feedback →

NTNUCP308D1Two-Bolt Pillow Block Unit – 40 mm Bore, Cast Iron Housing, Set-Screw Locking

Condition: New

Availability:

1 in stock

Two-bolt cast iron pillow block unit, 40 mm bore, set-screw locking, nitrile contact seals, 170 mm bolt centres, 60 mm shaft centre height.

Same day shipment

List Price

$52.71

1 in stock

Availability

1 in stock

On the Shelf & Ready to Ship

Free Shipping

On all orders

Free Returns

No Risk, No Hassle

Also Available From:

Specifications

Key Specifications

MFR / BrandNTN
MPNUCP308D1
GTIN4547359001723
OD90 mm (3.5430 in)

Technical Specifications

ConditionNew
TypeFlanged Mount Bearing
Base NumberUCP308
Industry TermsPillow block, plummer block, two-bolt flange-free base unit, mounted ball bearing unit
Application TypesConveyors, fans, agricultural drives, material handling shafting
Total Width52 mm (2.0470 in) inner ring
Overall Width27 mm (1.0630 in) outer ring
Bolt Center To Center Length170 mm (6.6875 in)
Bore Shaft Size40 mm (1.5750 in)
Housing StyleTwo-Bolt Pillow Block
Locking MethodTwo Set Screws
RelubricationOuter Ring Relubricatable
Replacement InsertUC308D1
Mpn VariantsUCP308D1, UCP 308 D1, UCP308, UC308D1, P308D1
Precision ClassISO Class 0
MaterialCast Iron Housing, Chrome Steel Insert
Min Temp-40 °C (-40 °F)
Dynamic Load Rating40.5 kN (9,105 lbf)
Static Load Rating24.0 kN (5,395 lbf)
SeriesUCP/UCPX 300 Series
Rolling ElementsBalls, Through-Hardened Steel
Max Temp120 °C (250 °F)
Bearing TypeMounted Ball Bearing Pillow Block Unit
Item Weight3.200 kg (7.06 lb)
Cage MaterialPressed Steel
Internal ClearanceCN
Expansion TypeNon-Expansion
Design UnitsMetric
Part NumberUCP308D1
Mounting TypeTwo-Bolt Base Mount
Seller Part Number: BG2#4ZJQA6

Product Description

What this part is

NTN UCP308D1 mounted ball bearing unit. Housing Style: Two-Bolt Pillow Block. Bore / Shaft Size: 40 mm (1.5750 in). Bore Type: Cylindrical. Locking Method: Two set screws in the extended inner ring. Insert Part Number: UC308D1. Housing Number: P308D1. Housing Material: Cast Iron. Housing Construction: One piece. Performance Class: Heavy duty. End Type: Open. Unit Quantity: 1 Pc.

Housing style and bolt pattern

Two-bolt pillow block base. Bolt Hole Centres: 170 mm (6.6875 in). Bolt Hole Width: 17 mm (0.6562 in). Bolt Hole Length: 27 mm (1.0625 in). Base to Shaft Centre Height: 60 mm (2.3594 in). Overall Length: 220 mm (8.6562 in). Housing Width: 60 mm (2.3750 in). Total Height: 116 mm (4.5625 in). Base Thickness: 22 mm (0.8750 in). Housing Width at Base: 60 mm (2.3750 in).

Insert bearing data

Outside Diameter: 90 mm (3.5430 in). Inner Ring Width: 52 mm (2.0470 in). Outer Ring Width: 27 mm (1.0630 in). Outer ring is spherical and self-aligning in the housing seat. Internal Clearance: CN. Cage Material: Pressed Steel. Ball Material: Through-hardened steel. Precision Rating: ISO Class 0. Seal Type: Contact. Seal Material: Nitrile Rubber. Expansion Type: Non-expansion.

What these specs mean in practice

Dynamic Load Rating: 40.5 kN (9,105 lbf). Static Load Rating: 24.0 kN (5,395 lbf). Rotational Speed, Maximum: 3,550 RPM on grease. Operating Temperature Range: −40 to 120 °C (−40 to 250 °F). Item Weight: 3.200 kg (7.06 lb). The spherical outer ring takes up initial shaft misalignment at mounting, so the two base bolts can be tightened against a shaft line that is not perfectly parallel to the mounting surface.

Relubrication

Relubrication Feature: Outer ring relubricatable. Grease enters through the housing fitting and passes into the insert through the outer ring, reaching the ball track directly.

Identification and interchange

GTIN: 4547359001723. MPN Variants: UCP308D1, UCP 308 D1, UCP308, UC308D1, P308D1. Series: UCP/UCPX 300 series. Country of Origin: Japan. The D1 suffix is NTN’s designation for the standard cast-iron, set-screw, nitrile-sealed execution of this unit.

You May Also Like

SKF H-2308 Bearing Adapter Sleeve Assembly H2308 KM8 MB8 35mm ID M40x1.5
H-2308

$21.23

88 in stock

Add to cart
NDH Q0L03BDTS9A Angular Bearing 7003-C Q-0L03-B-DT-S9A 17x35x10 mm 2 Pcs
Q0L03BDTS9A

$95.00

148 in stock

Add to cart
Deep Groove Ball Bearing - Straight Bore, 25 mm ID, 47 mm OD, 16 mm Width, Double Rubber Seal, Without Snap Ring.
630052RS1

$15.27

98 in stock

Add to cart

Need help finding the right part?

Our team can locate, cross-reference, and source all parts.

News

MRO Parts Fulfillment. What Fast Really Means

A shipping cutoff banner measures a vendor’s dock. It tells

Bearing Price Increases Stacked Deep In 2026

Nine bearing and power transmission manufacturers raised list prices this

Additional Resources

Need help finding the right part?

Our team can locate, cross-reference, and source all parts.

Get In Touch
Need help finding the right part?

Our team can locate, cross-reference, and source all parts.

Get In Touch

Sort

Brand

Price

MPN

Categories